Intro, and a question

Hi, my name is Emily. I'm 31, and I live in Utah with my husband and 4 year old daughter. This is my first time raising chickens, and since buying chickens I've started doing some major research. I think I'm pretty set with *most* everything, but 2 things. I have 5 New Hampshire chickens that are about 9 weeks. I bought them at only a couple days old, so I've had them for a minute. I *think* 4 of my 5 are roosters, but I'm waiting it out, and crossing my fingers for hens. But in my anticipation I decided to buy 4 black sexlinks a week ago (I did hours of research on how to sex chicks prior to purchasing, and am hoping I accurately learned the art, and sexed them prior to purchasing. I'm 99% sure they're pullets) I bought them just in case the others are roosters, but will keep all 9 should they all turn out to be hens.

My question is, when and how do I introduce the sexlinks to the new Hampshires? Any input will be greatly appreciated.

Sex links are called that for a reason. You can sex them at birth by the color of their feathers - the females are one color and males another.. There are black sex links and also red ones. If you post photos at "What breed or gender is this," they can let you know.